On non-mesonic decay of light Λ-hypernuclei

doi:10.1016/0375-9474(94)00565-5

Nuclear Physics A

Volume 585, Issues 1–2, 13 March 1995, Pages 197-204

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Abstract

The Dalitz phenomenological approach to non-mesonic decay of s-shell hypernuclei is extended to 1p-shell hypernuclei using the closure approximation over residual nucleus states. The developed formalism applied to the analysis of the BNL data on decays of _Λ¹²C, _Λ¹¹B, _Λ⁹Be and _Λ⁵He. The observed proximity of the ratios $γ = Γ_{n} Γ_{p}$ for _Λ¹²C and _Λ¹¹B is accounted for by a similarity of structure factors. Constraints on the permissible values of γ(_Λ¹²C) and γ(_Λ¹¹B) have been found. The equality of the γ′s for 1p-shell hypernuclei with the nuclear-core spin and isospin J_N = T = 0 has been established. Proportionality of Γ_nm, Γ_n and Γ_p to the number of nucleons in these hypernuclei has been shown. A qualitative explanation of the observed ratios $Γ_{nm} (_{Λ}^{12} C) Γ_{nm} (_{Λ}^{5} He)$ and $Γ_{nm} (_{Λ}^{9} Be) Γ_{nm} (_{Λ}^{5} He)$ is given.

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On non-mesonic decay of light Λ-hypernuclei

Abstract

Phys. Rev. Lett.

Phys. Rev. Lett.

Prog. Theor. Phys.

Phys. Rev.

Phys. Rev.

Phys. Rev.

Progr. Part. and Nucl. Phys.

Few-Body Systems

Phys. Rev.